Pileus Git - ~andy/linux/blob - drivers/gpu/drm/i915/intel_ddi.c

   1 /*
   2  * Copyright © 2012 Intel Corporation
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice (including the next
  12  * paragraph) shall be included in all copies or substantial portions of the
  13  * Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  18  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  19  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  20  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
  21  * IN THE SOFTWARE.
  22  *
  23  * Authors:
  24  *    Eugeni Dodonov <eugeni.dodonov@intel.com>
  25  *
  26  */
  27
  28 #include "i915_drv.h"
  29 #include "intel_drv.h"
  30
  31 /* HDMI/DVI modes ignore everything but the last 2 items. So we share
  32  * them for both DP and FDI transports, allowing those ports to
  33  * automatically adapt to HDMI connections as well
  34  */
  35 static const u32 hsw_ddi_translations_dp[] = {
  36         0x00FFFFFF, 0x0006000E,         /* DP parameters */
  37         0x00D75FFF, 0x0005000A,
  38         0x00C30FFF, 0x00040006,
  39         0x80AAAFFF, 0x000B0000,
  40         0x00FFFFFF, 0x0005000A,
  41         0x00D75FFF, 0x000C0004,
  42         0x80C30FFF, 0x000B0000,
  43         0x00FFFFFF, 0x00040006,
  44         0x80D75FFF, 0x000B0000,
  45 };
  46
  47 static const u32 hsw_ddi_translations_fdi[] = {
  48         0x00FFFFFF, 0x0007000E,         /* FDI parameters */
  49         0x00D75FFF, 0x000F000A,
  50         0x00C30FFF, 0x00060006,
  51         0x00AAAFFF, 0x001E0000,
  52         0x00FFFFFF, 0x000F000A,
  53         0x00D75FFF, 0x00160004,
  54         0x00C30FFF, 0x001E0000,
  55         0x00FFFFFF, 0x00060006,
  56         0x00D75FFF, 0x001E0000,
  57 };
  58
  59 static const u32 hsw_ddi_translations_hdmi[] = {
  60                                 /* Idx  NT mV diff      T mV diff       db  */
  61         0x00FFFFFF, 0x0006000E, /* 0:   400             400             0   */
  62         0x00E79FFF, 0x000E000C, /* 1:   400             500             2   */
  63         0x00D75FFF, 0x0005000A, /* 2:   400             600             3.5 */
  64         0x00FFFFFF, 0x0005000A, /* 3:   600             600             0   */
  65         0x00E79FFF, 0x001D0007, /* 4:   600             750             2   */
  66         0x00D75FFF, 0x000C0004, /* 5:   600             900             3.5 */
  67         0x00FFFFFF, 0x00040006, /* 6:   800             800             0   */
  68         0x80E79FFF, 0x00030002, /* 7:   800             1000            2   */
  69         0x00FFFFFF, 0x00140005, /* 8:   850             850             0   */
  70         0x00FFFFFF, 0x000C0004, /* 9:   900             900             0   */
  71         0x00FFFFFF, 0x001C0003, /* 10:  950             950             0   */
  72         0x80FFFFFF, 0x00030002, /* 11:  1000            1000            0   */
  73 };
  74
  75 static const u32 bdw_ddi_translations_edp[] = {
  76         0x00FFFFFF, 0x00000012,         /* eDP parameters */
  77         0x00EBAFFF, 0x00020011,
  78         0x00C71FFF, 0x0006000F,
  79         0x00FFFFFF, 0x00020011,
  80         0x00DB6FFF, 0x0005000F,
  81         0x00BEEFFF, 0x000A000C,
  82         0x00FFFFFF, 0x0005000F,
  83         0x00DB6FFF, 0x000A000C,
  84         0x00FFFFFF, 0x000A000C,
  85         0x00FFFFFF, 0x00140006          /* HDMI parameters 800mV 0dB*/
  86 };
  87
  88 static const u32 bdw_ddi_translations_dp[] = {
  89         0x00FFFFFF, 0x0007000E,         /* DP parameters */
  90         0x00D75FFF, 0x000E000A,
  91         0x00BEFFFF, 0x00140006,
  92         0x00FFFFFF, 0x000E000A,
  93         0x00D75FFF, 0x00180004,
  94         0x80CB2FFF, 0x001B0002,
  95         0x00F7DFFF, 0x00180004,
  96         0x80D75FFF, 0x001B0002,
  97         0x80FFFFFF, 0x001B0002,
  98         0x00FFFFFF, 0x00140006          /* HDMI parameters 800mV 0dB*/
  99 };
 100
 101 static const u32 bdw_ddi_translations_fdi[] = {
 102         0x00FFFFFF, 0x0001000E,         /* FDI parameters */
 103         0x00D75FFF, 0x0004000A,
 104         0x00C30FFF, 0x00070006,
 105         0x00AAAFFF, 0x000C0000,
 106         0x00FFFFFF, 0x0004000A,
 107         0x00D75FFF, 0x00090004,
 108         0x00C30FFF, 0x000C0000,
 109         0x00FFFFFF, 0x00070006,
 110         0x00D75FFF, 0x000C0000,
 111         0x00FFFFFF, 0x00140006          /* HDMI parameters 800mV 0dB*/
 112 };
 113
 114 enum port intel_ddi_get_encoder_port(struct intel_encoder *intel_encoder)
 115 {
 116         struct drm_encoder *encoder = &intel_encoder->base;
 117         int type = intel_encoder->type;
 118
 119         if (type == INTEL_OUTPUT_DISPLAYPORT || type == INTEL_OUTPUT_EDP ||
 120             type == INTEL_OUTPUT_HDMI || type == INTEL_OUTPUT_UNKNOWN) {
 121                 struct intel_digital_port *intel_dig_port =
 122                         enc_to_dig_port(encoder);
 123                 return intel_dig_port->port;
 124
 125         } else if (type == INTEL_OUTPUT_ANALOG) {
 126                 return PORT_E;
 127
 128         } else {
 129                 DRM_ERROR("Invalid DDI encoder type %d\n", type);
 130                 BUG();
 131         }
 132 }
 133
 134 /*
 135  * Starting with Haswell, DDI port buffers must be programmed with correct
 136  * values in advance. The buffer values are different for FDI and DP modes,
 137  * but the HDMI/DVI fields are shared among those. So we program the DDI
 138  * in either FDI or DP modes only, as HDMI connections will work with both
 139  * of those
 140  */
 141 static void intel_prepare_ddi_buffers(struct drm_device *dev, enum port port)
 142 {
 143         struct drm_i915_private *dev_priv = dev->dev_private;
 144         u32 reg;
 145         int i;
 146         int hdmi_level = dev_priv->vbt.ddi_port_info[port].hdmi_level_shift;
 147         const u32 *ddi_translations_fdi;
 148         const u32 *ddi_translations_dp;
 149         const u32 *ddi_translations_edp;
 150         const u32 *ddi_translations;
 151
 152         if (IS_BROADWELL(dev)) {
 153                 ddi_translations_fdi = bdw_ddi_translations_fdi;
 154                 ddi_translations_dp = bdw_ddi_translations_dp;
 155                 ddi_translations_edp = bdw_ddi_translations_edp;
 156         } else if (IS_HASWELL(dev)) {
 157                 ddi_translations_fdi = hsw_ddi_translations_fdi;
 158                 ddi_translations_dp = hsw_ddi_translations_dp;
 159                 ddi_translations_edp = hsw_ddi_translations_dp;
 160         } else {
 161                 WARN(1, "ddi translation table missing\n");
 162                 ddi_translations_edp = bdw_ddi_translations_dp;
 163                 ddi_translations_fdi = bdw_ddi_translations_fdi;
 164                 ddi_translations_dp = bdw_ddi_translations_dp;
 165         }
 166
 167         switch (port) {
 168         case PORT_A:
 169                 ddi_translations = ddi_translations_edp;
 170                 break;
 171         case PORT_B:
 172         case PORT_C:
 173                 ddi_translations = ddi_translations_dp;
 174                 break;
 175         case PORT_D:
 176                 if (intel_dp_is_edp(dev, PORT_D))
 177                         ddi_translations = ddi_translations_edp;
 178                 else
 179                         ddi_translations = ddi_translations_dp;
 180                 break;
 181         case PORT_E:
 182                 ddi_translations = ddi_translations_fdi;
 183                 break;
 184         default:
 185                 BUG();
 186         }
 187
 188         for (i = 0, reg = DDI_BUF_TRANS(port);
 189              i < ARRAY_SIZE(hsw_ddi_translations_fdi); i++) {
 190                 I915_WRITE(reg, ddi_translations[i]);
 191                 reg += 4;
 192         }
 193         /* Entry 9 is for HDMI: */
 194         for (i = 0; i < 2; i++) {
 195                 I915_WRITE(reg, hsw_ddi_translations_hdmi[hdmi_level * 2 + i]);
 196                 reg += 4;
 197         }
 198 }
 199
 200 /* Program DDI buffers translations for DP. By default, program ports A-D in DP
 201  * mode and port E for FDI.
 202  */
 203 void intel_prepare_ddi(struct drm_device *dev)
 204 {
 205         int port;
 206
 207         if (!HAS_DDI(dev))
 208                 return;
 209
 210         for (port = PORT_A; port <= PORT_E; port++)
 211                 intel_prepare_ddi_buffers(dev, port);
 212 }
 213
 214 static const long hsw_ddi_buf_ctl_values[] = {
 215         DDI_BUF_EMP_400MV_0DB_HSW,
 216         DDI_BUF_EMP_400MV_3_5DB_HSW,
 217         DDI_BUF_EMP_400MV_6DB_HSW,
 218         DDI_BUF_EMP_400MV_9_5DB_HSW,
 219         DDI_BUF_EMP_600MV_0DB_HSW,
 220         DDI_BUF_EMP_600MV_3_5DB_HSW,
 221         DDI_BUF_EMP_600MV_6DB_HSW,
 222         DDI_BUF_EMP_800MV_0DB_HSW,
 223         DDI_BUF_EMP_800MV_3_5DB_HSW
 224 };
 225
 226 static void intel_wait_ddi_buf_idle(struct drm_i915_private *dev_priv,
 227                                     enum port port)
 228 {
 229         uint32_t reg = DDI_BUF_CTL(port);
 230         int i;
 231
 232         for (i = 0; i < 8; i++) {
 233                 udelay(1);
 234                 if (I915_READ(reg) & DDI_BUF_IS_IDLE)
 235                         return;
 236         }
 237         DRM_ERROR("Timeout waiting for DDI BUF %c idle bit\n", port_name(port));
 238 }
 239
 240 /* Starting with Haswell, different DDI ports can work in FDI mode for
 241  * connection to the PCH-located connectors. For this, it is necessary to train
 242  * both the DDI port and PCH receiver for the desired DDI buffer settings.
 243  *
 244  * The recommended port to work in FDI mode is DDI E, which we use here. Also,
 245  * please note that when FDI mode is active on DDI E, it shares 2 lines with
 246  * DDI A (which is used for eDP)
 247  */
 248
 249 void hsw_fdi_link_train(struct drm_crtc *crtc)
 250 {
 251         struct drm_device *dev = crtc->dev;
 252         struct drm_i915_private *dev_priv = dev->dev_private;
 253         struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
 254         u32 temp, i, rx_ctl_val;
 255
 256         /* Set the FDI_RX_MISC pwrdn lanes and the 2 workarounds listed at the
 257          * mode set "sequence for CRT port" document:
 258          * - TP1 to TP2 time with the default value
 259          * - FDI delay to 90h
 260          *
 261          * WaFDIAutoLinkSetTimingOverrride:hsw
 262          */
 263         I915_WRITE(_FDI_RXA_MISC, FDI_RX_PWRDN_LANE1_VAL(2) |
 264                                   FDI_RX_PWRDN_LANE0_VAL(2) |
 265                                   FDI_RX_TP1_TO_TP2_48 | FDI_RX_FDI_DELAY_90);
 266
 267         /* Enable the PCH Receiver FDI PLL */
 268         rx_ctl_val = dev_priv->fdi_rx_config | FDI_RX_ENHANCE_FRAME_ENABLE |
 269                      FDI_RX_PLL_ENABLE |
 270                      FDI_DP_PORT_WIDTH(intel_crtc->config.fdi_lanes);
 271         I915_WRITE(_FDI_RXA_CTL, rx_ctl_val);
 272         POSTING_READ(_FDI_RXA_CTL);
 273         udelay(220);
 274
 275         /* Switch from Rawclk to PCDclk */
 276         rx_ctl_val |= FDI_PCDCLK;
 277         I915_WRITE(_FDI_RXA_CTL, rx_ctl_val);
 278
 279         /* Configure Port Clock Select */
 280         I915_WRITE(PORT_CLK_SEL(PORT_E), intel_crtc->ddi_pll_sel);
 281
 282         /* Start the training iterating through available voltages and emphasis,
 283          * testing each value twice. */
 284         for (i = 0; i < ARRAY_SIZE(hsw_ddi_buf_ctl_values) * 2; i++) {
 285                 /* Configure DP_TP_CTL with auto-training */
 286                 I915_WRITE(DP_TP_CTL(PORT_E),
 287                                         DP_TP_CTL_FDI_AUTOTRAIN |
 288                                         DP_TP_CTL_ENHANCED_FRAME_ENABLE |
 289                                         DP_TP_CTL_LINK_TRAIN_PAT1 |
 290                                         DP_TP_CTL_ENABLE);
 291
 292                 /* Configure and enable DDI_BUF_CTL for DDI E with next voltage.
 293                  * DDI E does not support port reversal, the functionality is
 294                  * achieved on the PCH side in FDI_RX_CTL, so no need to set the
 295                  * port reversal bit */
 296                 I915_WRITE(DDI_BUF_CTL(PORT_E),
 297                            DDI_BUF_CTL_ENABLE |
 298                            ((intel_crtc->config.fdi_lanes - 1) << 1) |
 299                            hsw_ddi_buf_ctl_values[i / 2]);
 300                 POSTING_READ(DDI_BUF_CTL(PORT_E));
 301
 302                 udelay(600);
 303
 304                 /* Program PCH FDI Receiver TU */
 305                 I915_WRITE(_FDI_RXA_TUSIZE1, TU_SIZE(64));
 306
 307                 /* Enable PCH FDI Receiver with auto-training */
 308                 rx_ctl_val |= FDI_RX_ENABLE | FDI_LINK_TRAIN_AUTO;
 309                 I915_WRITE(_FDI_RXA_CTL, rx_ctl_val);
 310                 POSTING_READ(_FDI_RXA_CTL);
 311
 312                 /* Wait for FDI receiver lane calibration */
 313                 udelay(30);
 314
 315                 /* Unset FDI_RX_MISC pwrdn lanes */
 316                 temp = I915_READ(_FDI_RXA_MISC);
 317                 temp &= ~(FDI_RX_PWRDN_LANE1_MASK | FDI_RX_PWRDN_LANE0_MASK);
 318                 I915_WRITE(_FDI_RXA_MISC, temp);
 319                 POSTING_READ(_FDI_RXA_MISC);
 320
 321                 /* Wait for FDI auto training time */
 322                 udelay(5);
 323
 324                 temp = I915_READ(DP_TP_STATUS(PORT_E));
 325                 if (temp & DP_TP_STATUS_AUTOTRAIN_DONE) {
 326                         DRM_DEBUG_KMS("FDI link training done on step %d\n", i);
 327
 328                         /* Enable normal pixel sending for FDI */
 329                         I915_WRITE(DP_TP_CTL(PORT_E),
 330                                    DP_TP_CTL_FDI_AUTOTRAIN |
 331                                    DP_TP_CTL_LINK_TRAIN_NORMAL |
 332                                    DP_TP_CTL_ENHANCED_FRAME_ENABLE |
 333                                    DP_TP_CTL_ENABLE);
 334
 335                         return;
 336                 }
 337
 338                 temp = I915_READ(DDI_BUF_CTL(PORT_E));
 339                 temp &= ~DDI_BUF_CTL_ENABLE;
 340                 I915_WRITE(DDI_BUF_CTL(PORT_E), temp);
 341                 POSTING_READ(DDI_BUF_CTL(PORT_E));
 342
 343                 /* Disable DP_TP_CTL and FDI_RX_CTL and retry */
 344                 temp = I915_READ(DP_TP_CTL(PORT_E));
 345                 temp &= ~(DP_TP_CTL_ENABLE | DP_TP_CTL_LINK_TRAIN_MASK);
 346                 temp |= DP_TP_CTL_LINK_TRAIN_PAT1;
 347                 I915_WRITE(DP_TP_CTL(PORT_E), temp);
 348                 POSTING_READ(DP_TP_CTL(PORT_E));
 349
 350                 intel_wait_ddi_buf_idle(dev_priv, PORT_E);
 351
 352                 rx_ctl_val &= ~FDI_RX_ENABLE;
 353                 I915_WRITE(_FDI_RXA_CTL, rx_ctl_val);
 354                 POSTING_READ(_FDI_RXA_CTL);
 355
 356                 /* Reset FDI_RX_MISC pwrdn lanes */
 357                 temp = I915_READ(_FDI_RXA_MISC);
 358                 temp &= ~(FDI_RX_PWRDN_LANE1_MASK | FDI_RX_PWRDN_LANE0_MASK);
 359                 temp |= FDI_RX_PWRDN_LANE1_VAL(2) | FDI_RX_PWRDN_LANE0_VAL(2);
 360                 I915_WRITE(_FDI_RXA_MISC, temp);
 361                 POSTING_READ(_FDI_RXA_MISC);
 362         }
 363
 364         DRM_ERROR("FDI link training failed!\n");
 365 }
 366
 367 static void intel_ddi_mode_set(struct intel_encoder *encoder)
 368 {
 369         struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc);
 370         int port = intel_ddi_get_encoder_port(encoder);
 371         int pipe = crtc->pipe;
 372         int type = encoder->type;
 373         struct drm_display_mode *adjusted_mode = &crtc->config.adjusted_mode;
 374
 375         DRM_DEBUG_KMS("Preparing DDI mode on port %c, pipe %c\n",
 376                       port_name(port), pipe_name(pipe));
 377
 378         crtc->eld_vld = false;
 379         if (type == INTEL_OUTPUT_DISPLAYPORT || type == INTEL_OUTPUT_EDP) {
 380                 struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base);
 381                 struct intel_digital_port *intel_dig_port =
 382                         enc_to_dig_port(&encoder->base);
 383
 384                 intel_dp->DP = intel_dig_port->saved_port_bits |
 385                                DDI_BUF_CTL_ENABLE | DDI_BUF_EMP_400MV_0DB_HSW;
 386                 intel_dp->DP |= DDI_PORT_WIDTH(intel_dp->lane_count);
 387
 388                 if (intel_dp->has_audio) {
 389                         DRM_DEBUG_DRIVER("DP audio on pipe %c on DDI\n",
 390                                          pipe_name(crtc->pipe));
 391
 392                         /* write eld */
 393                         DRM_DEBUG_DRIVER("DP audio: write eld information\n");
 394                         intel_write_eld(&encoder->base, adjusted_mode);
 395                 }
 396         } else if (type == INTEL_OUTPUT_HDMI) {
 397                 struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(&encoder->base);
 398
 399                 if (intel_hdmi->has_audio) {
 400                         /* Proper support for digital audio needs a new logic
 401                          * and a new set of registers, so we leave it for future
 402                          * patch bombing.
 403                          */
 404                         DRM_DEBUG_DRIVER("HDMI audio on pipe %c on DDI\n",
 405                                          pipe_name(crtc->pipe));
 406
 407                         /* write eld */
 408                         DRM_DEBUG_DRIVER("HDMI audio: write eld information\n");
 409                         intel_write_eld(&encoder->base, adjusted_mode);
 410                 }
 411
 412                 intel_hdmi->set_infoframes(&encoder->base, adjusted_mode);
 413         }
 414 }
 415
 416 static struct intel_encoder *
 417 intel_ddi_get_crtc_encoder(struct drm_crtc *crtc)
 418 {
 419         struct drm_device *dev = crtc->dev;
 420         struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
 421         struct intel_encoder *intel_encoder, *ret = NULL;
 422         int num_encoders = 0;
 423
 424         for_each_encoder_on_crtc(dev, crtc, intel_encoder) {
 425                 ret = intel_encoder;
 426                 num_encoders++;
 427         }
 428
 429         if (num_encoders != 1)
 430                 WARN(1, "%d encoders on crtc for pipe %c\n", num_encoders,
 431                      pipe_name(intel_crtc->pipe));
 432
 433         BUG_ON(ret == NULL);
 434         return ret;
 435 }
 436
 437 void intel_ddi_put_crtc_pll(struct drm_crtc *crtc)
 438 {
 439         struct drm_i915_private *dev_priv = crtc->dev->dev_private;
 440         struct intel_ddi_plls *plls = &dev_priv->ddi_plls;
 441         struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
 442         uint32_t val;
 443
 444         switch (intel_crtc->ddi_pll_sel) {
 445         case PORT_CLK_SEL_SPLL:
 446                 plls->spll_refcount--;
 447                 if (plls->spll_refcount == 0) {
 448                         DRM_DEBUG_KMS("Disabling SPLL\n");
 449                         val = I915_READ(SPLL_CTL);
 450                         WARN_ON(!(val & SPLL_PLL_ENABLE));
 451                         I915_WRITE(SPLL_CTL, val & ~SPLL_PLL_ENABLE);
 452                         POSTING_READ(SPLL_CTL);
 453                 }
 454                 break;
 455         case PORT_CLK_SEL_WRPLL1:
 456                 plls->wrpll1_refcount--;
 457                 if (plls->wrpll1_refcount == 0) {
 458                         DRM_DEBUG_KMS("Disabling WRPLL 1\n");
 459                         val = I915_READ(WRPLL_CTL1);
 460                         WARN_ON(!(val & WRPLL_PLL_ENABLE));
 461                         I915_WRITE(WRPLL_CTL1, val & ~WRPLL_PLL_ENABLE);
 462                         POSTING_READ(WRPLL_CTL1);
 463                 }
 464                 break;
 465         case PORT_CLK_SEL_WRPLL2:
 466                 plls->wrpll2_refcount--;
 467                 if (plls->wrpll2_refcount == 0) {
 468                         DRM_DEBUG_KMS("Disabling WRPLL 2\n");
 469                         val = I915_READ(WRPLL_CTL2);
 470                         WARN_ON(!(val & WRPLL_PLL_ENABLE));
 471                         I915_WRITE(WRPLL_CTL2, val & ~WRPLL_PLL_ENABLE);
 472                         POSTING_READ(WRPLL_CTL2);
 473                 }
 474                 break;
 475         }
 476
 477         WARN(plls->spll_refcount < 0, "Invalid SPLL refcount\n");
 478         WARN(plls->wrpll1_refcount < 0, "Invalid WRPLL1 refcount\n");
 479         WARN(plls->wrpll2_refcount < 0, "Invalid WRPLL2 refcount\n");
 480
 481         intel_crtc->ddi_pll_sel = PORT_CLK_SEL_NONE;
 482 }
 483
 484 #define LC_FREQ 2700
 485 #define LC_FREQ_2K (LC_FREQ * 2000)
 486
 487 #define P_MIN 2
 488 #define P_MAX 64
 489 #define P_INC 2
 490
 491 /* Constraints for PLL good behavior */
 492 #define REF_MIN 48
 493 #define REF_MAX 400
 494 #define VCO_MIN 2400
 495 #define VCO_MAX 4800
 496
 497 #define ABS_DIFF(a, b) ((a > b) ? (a - b) : (b - a))
 498
 499 struct wrpll_rnp {
 500         unsigned p, n2, r2;
 501 };
 502
 503 static unsigned wrpll_get_budget_for_freq(int clock)
 504 {
 505         unsigned budget;
 506
 507         switch (clock) {
 508         case 25175000:
 509         case 25200000:
 510         case 27000000:
 511         case 27027000:
 512         case 37762500:
 513         case 37800000:
 514         case 40500000:
 515         case 40541000:
 516         case 54000000:
 517         case 54054000:
 518         case 59341000:
 519         case 59400000:
 520         case 72000000:
 521         case 74176000:
 522         case 74250000:
 523         case 81000000:
 524         case 81081000:
 525         case 89012000:
 526         case 89100000:
 527         case 108000000:
 528         case 108108000:
 529         case 111264000:
 530         case 111375000:
 531         case 148352000:
 532         case 148500000:
 533         case 162000000:
 534         case 162162000:
 535         case 222525000:
 536         case 222750000:
 537         case 296703000:
 538         case 297000000:
 539                 budget = 0;
 540                 break;
 541         case 233500000:
 542         case 245250000:
 543         case 247750000:
 544         case 253250000:
 545         case 298000000:
 546                 budget = 1500;
 547                 break;
 548         case 169128000:
 549         case 169500000:
 550         case 179500000:
 551         case 202000000:
 552                 budget = 2000;
 553                 break;
 554         case 256250000:
 555         case 262500000:
 556         case 270000000:
 557         case 272500000:
 558         case 273750000:
 559         case 280750000:
 560         case 281250000:
 561         case 286000000:
 562         case 291750000:
 563                 budget = 4000;
 564                 break;
 565         case 267250000:
 566         case 268500000:
 567                 budget = 5000;
 568                 break;
 569         default:
 570                 budget = 1000;
 571                 break;
 572         }
 573
 574         return budget;
 575 }
 576
 577 static void wrpll_update_rnp(uint64_t freq2k, unsigned budget,
 578                              unsigned r2, unsigned n2, unsigned p,
 579                              struct wrpll_rnp *best)
 580 {
 581         uint64_t a, b, c, d, diff, diff_best;
 582
 583         /* No best (r,n,p) yet */
 584         if (best->p == 0) {
 585                 best->p = p;
 586                 best->n2 = n2;
 587                 best->r2 = r2;
 588                 return;
 589         }
 590
 591         /*
 592          * Output clock is (LC_FREQ_2K / 2000) * N / (P * R), which compares to
 593          * freq2k.
 594          *
 595          * delta = 1e6 *
 596          *         abs(freq2k - (LC_FREQ_2K * n2/(p * r2))) /
 597          *         freq2k;
 598          *
 599          * and we would like delta <= budget.
 600          *
 601          * If the discrepancy is above the PPM-based budget, always prefer to
 602          * improve upon the previous solution.  However, if you're within the
 603          * budget, try to maximize Ref * VCO, that is N / (P * R^2).
 604          */
 605         a = freq2k * budget * p * r2;
 606         b = freq2k * budget * best->p * best->r2;
 607         diff = ABS_DIFF((freq2k * p * r2), (LC_FREQ_2K * n2));
 608         diff_best = ABS_DIFF((freq2k * best->p * best->r2),
 609                              (LC_FREQ_2K * best->n2));
 610         c = 1000000 * diff;
 611         d = 1000000 * diff_best;
 612
 613         if (a < c && b < d) {
 614                 /* If both are above the budget, pick the closer */
 615                 if (best->p * best->r2 * diff < p * r2 * diff_best) {
 616                         best->p = p;
 617                         best->n2 = n2;
 618                         best->r2 = r2;
 619                 }
 620         } else if (a >= c && b < d) {
 621                 /* If A is below the threshold but B is above it?  Update. */
 622                 best->p = p;
 623                 best->n2 = n2;
 624                 best->r2 = r2;
 625         } else if (a >= c && b >= d) {
 626                 /* Both are below the limit, so pick the higher n2/(r2*r2) */
 627                 if (n2 * best->r2 * best->r2 > best->n2 * r2 * r2) {
 628                         best->p = p;
 629                         best->n2 = n2;
 630                         best->r2 = r2;
 631                 }
 632         }
 633         /* Otherwise a < c && b >= d, do nothing */
 634 }
 635
 636 static void
 637 intel_ddi_calculate_wrpll(int clock /* in Hz */,
 638                           unsigned *r2_out, unsigned *n2_out, unsigned *p_out)
 639 {
 640         uint64_t freq2k;
 641         unsigned p, n2, r2;
 642         struct wrpll_rnp best = { 0, 0, 0 };
 643         unsigned budget;
 644
 645         freq2k = clock / 100;
 646
 647         budget = wrpll_get_budget_for_freq(clock);
 648
 649         /* Special case handling for 540 pixel clock: bypass WR PLL entirely
 650          * and directly pass the LC PLL to it. */
 651         if (freq2k == 5400000) {
 652                 *n2_out = 2;
 653                 *p_out = 1;
 654                 *r2_out = 2;
 655                 return;
 656         }
 657
 658         /*
 659          * Ref = LC_FREQ / R, where Ref is the actual reference input seen by
 660          * the WR PLL.
 661          *
 662          * We want R so that REF_MIN <= Ref <= REF_MAX.
 663          * Injecting R2 = 2 * R gives:
 664          *   REF_MAX * r2 > LC_FREQ * 2 and
 665          *   REF_MIN * r2 < LC_FREQ * 2
 666          *
 667          * Which means the desired boundaries for r2 are:
 668          *  LC_FREQ * 2 / REF_MAX < r2 < LC_FREQ * 2 / REF_MIN
 669          *
 670          */
 671         for (r2 = LC_FREQ * 2 / REF_MAX + 1;
 672              r2 <= LC_FREQ * 2 / REF_MIN;
 673              r2++) {
 674
 675                 /*
 676                  * VCO = N * Ref, that is: VCO = N * LC_FREQ / R
 677                  *
 678                  * Once again we want VCO_MIN <= VCO <= VCO_MAX.
 679                  * Injecting R2 = 2 * R and N2 = 2 * N, we get:
 680                  *   VCO_MAX * r2 > n2 * LC_FREQ and
 681                  *   VCO_MIN * r2 < n2 * LC_FREQ)
 682                  *
 683                  * Which means the desired boundaries for n2 are:
 684                  * VCO_MIN * r2 / LC_FREQ < n2 < VCO_MAX * r2 / LC_FREQ
 685                  */
 686                 for (n2 = VCO_MIN * r2 / LC_FREQ + 1;
 687                      n2 <= VCO_MAX * r2 / LC_FREQ;
 688                      n2++) {
 689
 690                         for (p = P_MIN; p <= P_MAX; p += P_INC)
 691                                 wrpll_update_rnp(freq2k, budget,
 692                                                  r2, n2, p, &best);
 693                 }
 694         }
 695
 696         *n2_out = best.n2;
 697         *p_out = best.p;
 698         *r2_out = best.r2;
 699 }
 700
 701 /*
 702  * Tries to find a PLL for the CRTC. If it finds, it increases the refcount and
 703  * stores it in intel_crtc->ddi_pll_sel, so other mode sets won't be able to
 704  * steal the selected PLL. You need to call intel_ddi_pll_enable to actually
 705  * enable the PLL.
 706  */
 707 bool intel_ddi_pll_select(struct intel_crtc *intel_crtc)
 708 {
 709         struct drm_crtc *crtc = &intel_crtc->base;
 710         struct intel_encoder *intel_encoder = intel_ddi_get_crtc_encoder(crtc);
 711         struct drm_encoder *encoder = &intel_encoder->base;
 712         struct drm_i915_private *dev_priv = crtc->dev->dev_private;
 713         struct intel_ddi_plls *plls = &dev_priv->ddi_plls;
 714         int type = intel_encoder->type;
 715         enum pipe pipe = intel_crtc->pipe;
 716         int clock = intel_crtc->config.port_clock;
 717
 718         intel_ddi_put_crtc_pll(crtc);
 719
 720         if (type == INTEL_OUTPUT_DISPLAYPORT || type == INTEL_OUTPUT_EDP) {
 721                 struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
 722
 723                 switch (intel_dp->link_bw) {
 724                 case DP_LINK_BW_1_62:
 725                         intel_crtc->ddi_pll_sel = PORT_CLK_SEL_LCPLL_810;
 726                         break;
 727                 case DP_LINK_BW_2_7:
 728                         intel_crtc->ddi_pll_sel = PORT_CLK_SEL_LCPLL_1350;
 729                         break;
 730                 case DP_LINK_BW_5_4:
 731                         intel_crtc->ddi_pll_sel = PORT_CLK_SEL_LCPLL_2700;
 732                         break;
 733                 default:
 734                         DRM_ERROR("Link bandwidth %d unsupported\n",
 735                                   intel_dp->link_bw);
 736                         return false;
 737                 }
 738
 739         } else if (type == INTEL_OUTPUT_HDMI) {
 740                 uint32_t reg, val;
 741                 unsigned p, n2, r2;
 742
 743                 intel_ddi_calculate_wrpll(clock * 1000, &r2, &n2, &p);
 744
 745                 val = WRPLL_PLL_ENABLE | WRPLL_PLL_SELECT_LCPLL_2700 |
 746                       WRPLL_DIVIDER_REFERENCE(r2) | WRPLL_DIVIDER_FEEDBACK(n2) |
 747                       WRPLL_DIVIDER_POST(p);
 748
 749                 if (val == I915_READ(WRPLL_CTL1)) {
 750                         DRM_DEBUG_KMS("Reusing WRPLL 1 on pipe %c\n",
 751                                       pipe_name(pipe));
 752                         reg = WRPLL_CTL1;
 753                 } else if (val == I915_READ(WRPLL_CTL2)) {
 754                         DRM_DEBUG_KMS("Reusing WRPLL 2 on pipe %c\n",
 755                                       pipe_name(pipe));
 756                         reg = WRPLL_CTL2;
 757                 } else if (plls->wrpll1_refcount == 0) {
 758                         DRM_DEBUG_KMS("Using WRPLL 1 on pipe %c\n",
 759                                       pipe_name(pipe));
 760                         reg = WRPLL_CTL1;
 761                 } else if (plls->wrpll2_refcount == 0) {
 762                         DRM_DEBUG_KMS("Using WRPLL 2 on pipe %c\n",
 763                                       pipe_name(pipe));
 764                         reg = WRPLL_CTL2;
 765                 } else {
 766                         DRM_ERROR("No WRPLLs available!\n");
 767                         return false;
 768                 }
 769
 770                 DRM_DEBUG_KMS("WRPLL: %dKHz refresh rate with p=%d, n2=%d r2=%d\n",
 771                               clock, p, n2, r2);
 772
 773                 if (reg == WRPLL_CTL1) {
 774                         plls->wrpll1_refcount++;
 775                         intel_crtc->ddi_pll_sel = PORT_CLK_SEL_WRPLL1;
 776                 } else {
 777                         plls->wrpll2_refcount++;
 778                         intel_crtc->ddi_pll_sel = PORT_CLK_SEL_WRPLL2;
 779                 }
 780
 781         } else if (type == INTEL_OUTPUT_ANALOG) {
 782                 if (plls->spll_refcount == 0) {
 783                         DRM_DEBUG_KMS("Using SPLL on pipe %c\n",
 784                                       pipe_name(pipe));
 785                         plls->spll_refcount++;
 786                         intel_crtc->ddi_pll_sel = PORT_CLK_SEL_SPLL;
 787                 } else {
 788                         DRM_ERROR("SPLL already in use\n");
 789                         return false;
 790                 }
 791
 792         } else {
 793                 WARN(1, "Invalid DDI encoder type %d\n", type);
 794                 return false;
 795         }
 796
 797         return true;
 798 }
 799
 800 /*
 801  * To be called after intel_ddi_pll_select(). That one selects the PLL to be
 802  * used, this one actually enables the PLL.
 803  */
 804 void intel_ddi_pll_enable(struct intel_crtc *crtc)
 805 {
 806         struct drm_device *dev = crtc->base.dev;
 807         struct drm_i915_private *dev_priv = dev->dev_private;
 808         struct intel_ddi_plls *plls = &dev_priv->ddi_plls;
 809         int clock = crtc->config.port_clock;
 810         uint32_t reg, cur_val, new_val;
 811         int refcount;
 812         const char *pll_name;
 813         uint32_t enable_bit = (1 << 31);
 814         unsigned int p, n2, r2;
 815
 816         BUILD_BUG_ON(enable_bit != SPLL_PLL_ENABLE);
 817         BUILD_BUG_ON(enable_bit != WRPLL_PLL_ENABLE);
 818
 819         switch (crtc->ddi_pll_sel) {
 820         case PORT_CLK_SEL_LCPLL_2700:
 821         case PORT_CLK_SEL_LCPLL_1350:
 822         case PORT_CLK_SEL_LCPLL_810:
 823                 /*
 824                  * LCPLL should always be enabled at this point of the mode set
 825                  * sequence, so nothing to do.
 826                  */
 827                 return;
 828
 829         case PORT_CLK_SEL_SPLL:
 830                 pll_name = "SPLL";
 831                 reg = SPLL_CTL;
 832                 refcount = plls->spll_refcount;
 833                 new_val = SPLL_PLL_ENABLE | SPLL_PLL_FREQ_1350MHz |
 834                           SPLL_PLL_SSC;
 835                 break;
 836
 837         case PORT_CLK_SEL_WRPLL1:
 838         case PORT_CLK_SEL_WRPLL2:
 839                 if (crtc->ddi_pll_sel == PORT_CLK_SEL_WRPLL1) {
 840                         pll_name = "WRPLL1";
 841                         reg = WRPLL_CTL1;
 842                         refcount = plls->wrpll1_refcount;
 843                 } else {
 844                         pll_name = "WRPLL2";
 845                         reg = WRPLL_CTL2;
 846                         refcount = plls->wrpll2_refcount;
 847                 }
 848
 849                 intel_ddi_calculate_wrpll(clock * 1000, &r2, &n2, &p);
 850
 851                 new_val = WRPLL_PLL_ENABLE | WRPLL_PLL_SELECT_LCPLL_2700 |
 852                           WRPLL_DIVIDER_REFERENCE(r2) |
 853                           WRPLL_DIVIDER_FEEDBACK(n2) | WRPLL_DIVIDER_POST(p);
 854
 855                 break;
 856
 857         case PORT_CLK_SEL_NONE:
 858                 WARN(1, "Bad selected pll: PORT_CLK_SEL_NONE\n");
 859                 return;
 860         default:
 861                 WARN(1, "Bad selected pll: 0x%08x\n", crtc->ddi_pll_sel);
 862                 return;
 863         }
 864
 865         cur_val = I915_READ(reg);
 866
 867         WARN(refcount < 1, "Bad %s refcount: %d\n", pll_name, refcount);
 868         if (refcount == 1) {
 869                 WARN(cur_val & enable_bit, "%s already enabled\n", pll_name);
 870                 I915_WRITE(reg, new_val);
 871                 POSTING_READ(reg);
 872                 udelay(20);
 873         } else {
 874                 WARN((cur_val & enable_bit) == 0, "%s disabled\n", pll_name);
 875         }
 876 }
 877
 878 void intel_ddi_set_pipe_settings(struct drm_crtc *crtc)
 879 {
 880         struct drm_i915_private *dev_priv = crtc->dev->dev_private;
 881         struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
 882         struct intel_encoder *intel_encoder = intel_ddi_get_crtc_encoder(crtc);
 883         enum transcoder cpu_transcoder = intel_crtc->config.cpu_transcoder;
 884         int type = intel_encoder->type;
 885         uint32_t temp;
 886
 887         if (type == INTEL_OUTPUT_DISPLAYPORT || type == INTEL_OUTPUT_EDP) {
 888
 889                 temp = TRANS_MSA_SYNC_CLK;
 890                 switch (intel_crtc->config.pipe_bpp) {
 891                 case 18:
 892                         temp |= TRANS_MSA_6_BPC;
 893                         break;
 894                 case 24:
 895                         temp |= TRANS_MSA_8_BPC;
 896                         break;
 897                 case 30:
 898                         temp |= TRANS_MSA_10_BPC;
 899                         break;
 900                 case 36:
 901                         temp |= TRANS_MSA_12_BPC;
 902                         break;
 903                 default:
 904                         BUG();
 905                 }
 906                 I915_WRITE(TRANS_MSA_MISC(cpu_transcoder), temp);
 907         }
 908 }
 909
 910 void intel_ddi_enable_transcoder_func(struct drm_crtc *crtc)
 911 {
 912         struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
 913         struct intel_encoder *intel_encoder = intel_ddi_get_crtc_encoder(crtc);
 914         struct drm_encoder *encoder = &intel_encoder->base;
 915         struct drm_device *dev = crtc->dev;
 916         struct drm_i915_private *dev_priv = dev->dev_private;
 917         enum pipe pipe = intel_crtc->pipe;
 918         enum transcoder cpu_transcoder = intel_crtc->config.cpu_transcoder;
 919         enum port port = intel_ddi_get_encoder_port(intel_encoder);
 920         int type = intel_encoder->type;
 921         uint32_t temp;
 922
 923         /* Enable TRANS_DDI_FUNC_CTL for the pipe to work in HDMI mode */
 924         temp = TRANS_DDI_FUNC_ENABLE;
 925         temp |= TRANS_DDI_SELECT_PORT(port);
 926
 927         switch (intel_crtc->config.pipe_bpp) {
 928         case 18:
 929                 temp |= TRANS_DDI_BPC_6;
 930                 break;
 931         case 24:
 932                 temp |= TRANS_DDI_BPC_8;
 933                 break;
 934         case 30:
 935                 temp |= TRANS_DDI_BPC_10;
 936                 break;
 937         case 36:
 938                 temp |= TRANS_DDI_BPC_12;
 939                 break;
 940         default:
 941                 BUG();
 942         }
 943
 944         if (intel_crtc->config.adjusted_mode.flags & DRM_MODE_FLAG_PVSYNC)
 945                 temp |= TRANS_DDI_PVSYNC;
 946         if (intel_crtc->config.adjusted_mode.flags & DRM_MODE_FLAG_PHSYNC)
 947                 temp |= TRANS_DDI_PHSYNC;
 948
 949         if (cpu_transcoder == TRANSCODER_EDP) {
 950                 switch (pipe) {
 951                 case PIPE_A:
 952                         /* On Haswell, can only use the always-on power well for
 953                          * eDP when not using the panel fitter, and when not
 954                          * using motion blur mitigation (which we don't
 955                          * support). */
 956                         if (IS_HASWELL(dev) && intel_crtc->config.pch_pfit.enabled)
 957                                 temp |= TRANS_DDI_EDP_INPUT_A_ONOFF;
 958                         else
 959                                 temp |= TRANS_DDI_EDP_INPUT_A_ON;
 960                         break;
 961                 case PIPE_B:
 962                         temp |= TRANS_DDI_EDP_INPUT_B_ONOFF;
 963                         break;
 964                 case PIPE_C:
 965                         temp |= TRANS_DDI_EDP_INPUT_C_ONOFF;
 966                         break;
 967                 default:
 968                         BUG();
 969                         break;
 970                 }
 971         }
 972
 973         if (type == INTEL_OUTPUT_HDMI) {
 974                 struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(encoder);
 975
 976                 if (intel_hdmi->has_hdmi_sink)
 977                         temp |= TRANS_DDI_MODE_SELECT_HDMI;
 978                 else
 979                         temp |= TRANS_DDI_MODE_SELECT_DVI;
 980
 981         } else if (type == INTEL_OUTPUT_ANALOG) {
 982                 temp |= TRANS_DDI_MODE_SELECT_FDI;
 983                 temp |= (intel_crtc->config.fdi_lanes - 1) << 1;
 984
 985         } else if (type == INTEL_OUTPUT_DISPLAYPORT ||
 986                    type == INTEL_OUTPUT_EDP) {
 987                 struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
 988
 989                 temp |= TRANS_DDI_MODE_SELECT_DP_SST;
 990
 991                 temp |= DDI_PORT_WIDTH(intel_dp->lane_count);
 992         } else {
 993                 WARN(1, "Invalid encoder type %d for pipe %c\n",
 994                      intel_encoder->type, pipe_name(pipe));
 995         }
 996
 997         I915_WRITE(TRANS_DDI_FUNC_CTL(cpu_transcoder), temp);
 998 }
 999
1000 void intel_ddi_disable_transcoder_func(struct drm_i915_private *dev_priv,
1001                                        enum transcoder cpu_transcoder)
1002 {
1003         uint32_t reg = TRANS_DDI_FUNC_CTL(cpu_transcoder);
1004         uint32_t val = I915_READ(reg);
1005
1006         val &= ~(TRANS_DDI_FUNC_ENABLE | TRANS_DDI_PORT_MASK);
1007         val |= TRANS_DDI_PORT_NONE;
1008         I915_WRITE(reg, val);
1009 }
1010
1011 bool intel_ddi_connector_get_hw_state(struct intel_connector *intel_connector)
1012 {
1013         struct drm_device *dev = intel_connector->base.dev;
1014         struct drm_i915_private *dev_priv = dev->dev_private;
1015         struct intel_encoder *intel_encoder = intel_connector->encoder;
1016         int type = intel_connector->base.connector_type;
1017         enum port port = intel_ddi_get_encoder_port(intel_encoder);
1018         enum pipe pipe = 0;
1019         enum transcoder cpu_transcoder;
1020         uint32_t tmp;
1021
1022         if (!intel_encoder->get_hw_state(intel_encoder, &pipe))
1023                 return false;
1024
1025         if (port == PORT_A)
1026                 cpu_transcoder = TRANSCODER_EDP;
1027         else
1028                 cpu_transcoder = (enum transcoder) pipe;
1029
1030         tmp = I915_READ(TRANS_DDI_FUNC_CTL(cpu_transcoder));
1031
1032         switch (tmp & TRANS_DDI_MODE_SELECT_MASK) {
1033         case TRANS_DDI_MODE_SELECT_HDMI:
1034         case TRANS_DDI_MODE_SELECT_DVI:
1035                 return (type == DRM_MODE_CONNECTOR_HDMIA);
1036
1037         case TRANS_DDI_MODE_SELECT_DP_SST:
1038                 if (type == DRM_MODE_CONNECTOR_eDP)
1039                         return true;
1040         case TRANS_DDI_MODE_SELECT_DP_MST:
1041                 return (type == DRM_MODE_CONNECTOR_DisplayPort);
1042
1043         case TRANS_DDI_MODE_SELECT_FDI:
1044                 return (type == DRM_MODE_CONNECTOR_VGA);
1045
1046         default:
1047                 return false;
1048         }
1049 }
1050
1051 bool intel_ddi_get_hw_state(struct intel_encoder *encoder,
1052                             enum pipe *pipe)
1053 {
1054         struct drm_device *dev = encoder->base.dev;
1055         struct drm_i915_private *dev_priv = dev->dev_private;
1056         enum port port = intel_ddi_get_encoder_port(encoder);
1057         u32 tmp;
1058         int i;
1059
1060         tmp = I915_READ(DDI_BUF_CTL(port));
1061
1062         if (!(tmp & DDI_BUF_CTL_ENABLE))
1063                 return false;
1064
1065         if (port == PORT_A) {
1066                 tmp = I915_READ(TRANS_DDI_FUNC_CTL(TRANSCODER_EDP));
1067
1068                 switch (tmp & TRANS_DDI_EDP_INPUT_MASK) {
1069                 case TRANS_DDI_EDP_INPUT_A_ON:
1070                 case TRANS_DDI_EDP_INPUT_A_ONOFF:
1071                         *pipe = PIPE_A;
1072                         break;
1073                 case TRANS_DDI_EDP_INPUT_B_ONOFF:
1074                         *pipe = PIPE_B;
1075                         break;
1076                 case TRANS_DDI_EDP_INPUT_C_ONOFF:
1077                         *pipe = PIPE_C;
1078                         break;
1079                 }
1080
1081                 return true;
1082         } else {
1083                 for (i = TRANSCODER_A; i <= TRANSCODER_C; i++) {
1084                         tmp = I915_READ(TRANS_DDI_FUNC_CTL(i));
1085
1086                         if ((tmp & TRANS_DDI_PORT_MASK)
1087                             == TRANS_DDI_SELECT_PORT(port)) {
1088                                 *pipe = i;
1089                                 return true;
1090                         }
1091                 }
1092         }
1093
1094         DRM_DEBUG_KMS("No pipe for ddi port %c found\n", port_name(port));
1095
1096         return false;
1097 }
1098
1099 static uint32_t intel_ddi_get_crtc_pll(struct drm_i915_private *dev_priv,
1100                                        enum pipe pipe)
1101 {
1102         uint32_t temp, ret;
1103         enum port port = I915_MAX_PORTS;
1104         enum transcoder cpu_transcoder = intel_pipe_to_cpu_transcoder(dev_priv,
1105                                                                       pipe);
1106         int i;
1107
1108         if (cpu_transcoder == TRANSCODER_EDP) {
1109                 port = PORT_A;
1110         } else {
1111                 temp = I915_READ(TRANS_DDI_FUNC_CTL(cpu_transcoder));
1112                 temp &= TRANS_DDI_PORT_MASK;
1113
1114                 for (i = PORT_B; i <= PORT_E; i++)
1115                         if (temp == TRANS_DDI_SELECT_PORT(i))
1116                                 port = i;
1117         }
1118
1119         if (port == I915_MAX_PORTS) {
1120                 WARN(1, "Pipe %c enabled on an unknown port\n",
1121                      pipe_name(pipe));
1122                 ret = PORT_CLK_SEL_NONE;
1123         } else {
1124                 ret = I915_READ(PORT_CLK_SEL(port));
1125                 DRM_DEBUG_KMS("Pipe %c connected to port %c using clock "
1126                               "0x%08x\n", pipe_name(pipe), port_name(port),
1127                               ret);
1128         }
1129
1130         return ret;
1131 }
1132
1133 void intel_ddi_setup_hw_pll_state(struct drm_device *dev)
1134 {
1135         struct drm_i915_private *dev_priv = dev->dev_private;
1136         enum pipe pipe;
1137         struct intel_crtc *intel_crtc;
1138
1139         dev_priv->ddi_plls.spll_refcount = 0;
1140         dev_priv->ddi_plls.wrpll1_refcount = 0;
1141         dev_priv->ddi_plls.wrpll2_refcount = 0;
1142
1143         for_each_pipe(pipe) {
1144                 intel_crtc =
1145                         to_intel_crtc(dev_priv->pipe_to_crtc_mapping[pipe]);
1146
1147                 if (!intel_crtc->active) {
1148                         intel_crtc->ddi_pll_sel = PORT_CLK_SEL_NONE;
1149                         continue;
1150                 }
1151
1152                 intel_crtc->ddi_pll_sel = intel_ddi_get_crtc_pll(dev_priv,
1153                                                                  pipe);
1154
1155                 switch (intel_crtc->ddi_pll_sel) {
1156                 case PORT_CLK_SEL_SPLL:
1157                         dev_priv->ddi_plls.spll_refcount++;
1158                         break;
1159                 case PORT_CLK_SEL_WRPLL1:
1160                         dev_priv->ddi_plls.wrpll1_refcount++;
1161                         break;
1162                 case PORT_CLK_SEL_WRPLL2:
1163                         dev_priv->ddi_plls.wrpll2_refcount++;
1164                         break;
1165                 }
1166         }
1167 }
1168
1169 void intel_ddi_enable_pipe_clock(struct intel_crtc *intel_crtc)
1170 {
1171         struct drm_crtc *crtc = &intel_crtc->base;
1172         struct drm_i915_private *dev_priv = crtc->dev->dev_private;
1173         struct intel_encoder *intel_encoder = intel_ddi_get_crtc_encoder(crtc);
1174         enum port port = intel_ddi_get_encoder_port(intel_encoder);
1175         enum transcoder cpu_transcoder = intel_crtc->config.cpu_transcoder;
1176
1177         if (cpu_transcoder != TRANSCODER_EDP)
1178                 I915_WRITE(TRANS_CLK_SEL(cpu_transcoder),
1179                            TRANS_CLK_SEL_PORT(port));
1180 }
1181
1182 void intel_ddi_disable_pipe_clock(struct intel_crtc *intel_crtc)
1183 {
1184         struct drm_i915_private *dev_priv = intel_crtc->base.dev->dev_private;
1185         enum transcoder cpu_transcoder = intel_crtc->config.cpu_transcoder;
1186
1187         if (cpu_transcoder != TRANSCODER_EDP)
1188                 I915_WRITE(TRANS_CLK_SEL(cpu_transcoder),
1189                            TRANS_CLK_SEL_DISABLED);
1190 }
1191
1192 static void intel_ddi_pre_enable(struct intel_encoder *intel_encoder)
1193 {
1194         struct drm_encoder *encoder = &intel_encoder->base;
1195         struct drm_crtc *crtc = encoder->crtc;
1196         struct drm_i915_private *dev_priv = encoder->dev->dev_private;
1197         struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
1198         enum port port = intel_ddi_get_encoder_port(intel_encoder);
1199         int type = intel_encoder->type;
1200
1201         if (type == INTEL_OUTPUT_EDP) {
1202                 struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
1203                 ironlake_edp_panel_on(intel_dp);
1204         }
1205
1206         WARN_ON(intel_crtc->ddi_pll_sel == PORT_CLK_SEL_NONE);
1207         I915_WRITE(PORT_CLK_SEL(port), intel_crtc->ddi_pll_sel);
1208
1209         if (type == INTEL_OUTPUT_DISPLAYPORT || type == INTEL_OUTPUT_EDP) {
1210                 struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
1211
1212                 intel_dp_sink_dpms(intel_dp, DRM_MODE_DPMS_ON);
1213                 intel_dp_start_link_train(intel_dp);
1214                 intel_dp_complete_link_train(intel_dp);
1215                 if (port != PORT_A)
1216                         intel_dp_stop_link_train(intel_dp);
1217         }
1218 }
1219
1220 static void intel_ddi_post_disable(struct intel_encoder *intel_encoder)
1221 {
1222         struct drm_encoder *encoder = &intel_encoder->base;
1223         struct drm_i915_private *dev_priv = encoder->dev->dev_private;
1224         enum port port = intel_ddi_get_encoder_port(intel_encoder);
1225         int type = intel_encoder->type;
1226         uint32_t val;
1227         bool wait = false;
1228
1229         val = I915_READ(DDI_BUF_CTL(port));
1230         if (val & DDI_BUF_CTL_ENABLE) {
1231                 val &= ~DDI_BUF_CTL_ENABLE;
1232                 I915_WRITE(DDI_BUF_CTL(port), val);
1233                 wait = true;
1234         }
1235
1236         val = I915_READ(DP_TP_CTL(port));
1237         val &= ~(DP_TP_CTL_ENABLE | DP_TP_CTL_LINK_TRAIN_MASK);
1238         val |= DP_TP_CTL_LINK_TRAIN_PAT1;
1239         I915_WRITE(DP_TP_CTL(port), val);
1240
1241         if (wait)
1242                 intel_wait_ddi_buf_idle(dev_priv, port);
1243
1244         if (type == INTEL_OUTPUT_DISPLAYPORT || type == INTEL_OUTPUT_EDP) {
1245                 struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
1246                 intel_dp_sink_dpms(intel_dp, DRM_MODE_DPMS_OFF);
1247                 ironlake_edp_panel_vdd_on(intel_dp);
1248                 ironlake_edp_panel_off(intel_dp);
1249         }
1250
1251         I915_WRITE(PORT_CLK_SEL(port), PORT_CLK_SEL_NONE);
1252 }
1253
1254 static void intel_enable_ddi(struct intel_encoder *intel_encoder)
1255 {
1256         struct drm_encoder *encoder = &intel_encoder->base;
1257         struct drm_crtc *crtc = encoder->crtc;
1258         struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
1259         int pipe = intel_crtc->pipe;
1260         struct drm_device *dev = encoder->dev;
1261         struct drm_i915_private *dev_priv = dev->dev_private;
1262         enum port port = intel_ddi_get_encoder_port(intel_encoder);
1263         int type = intel_encoder->type;
1264         uint32_t tmp;
1265
1266         if (type == INTEL_OUTPUT_HDMI) {
1267                 struct intel_digital_port *intel_dig_port =
1268                         enc_to_dig_port(encoder);
1269
1270                 /* In HDMI/DVI mode, the port width, and swing/emphasis values
1271                  * are ignored so nothing special needs to be done besides
1272                  * enabling the port.
1273                  */
1274                 I915_WRITE(DDI_BUF_CTL(port),
1275                            intel_dig_port->saved_port_bits |
1276                            DDI_BUF_CTL_ENABLE);
1277         } else if (type == INTEL_OUTPUT_EDP) {
1278                 struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
1279
1280                 if (port == PORT_A)
1281                         intel_dp_stop_link_train(intel_dp);
1282
1283                 ironlake_edp_backlight_on(intel_dp);
1284                 intel_edp_psr_enable(intel_dp);
1285         }
1286
1287         if (intel_crtc->eld_vld && type != INTEL_OUTPUT_EDP) {
1288                 tmp = I915_READ(HSW_AUD_PIN_ELD_CP_VLD);
1289                 tmp |= ((AUDIO_OUTPUT_ENABLE_A | AUDIO_ELD_VALID_A) << (pipe * 4));
1290                 I915_WRITE(HSW_AUD_PIN_ELD_CP_VLD, tmp);
1291         }
1292 }
1293
1294 static void intel_disable_ddi(struct intel_encoder *intel_encoder)
1295 {
1296         struct drm_encoder *encoder = &intel_encoder->base;
1297         struct drm_crtc *crtc = encoder->crtc;
1298         struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
1299         int pipe = intel_crtc->pipe;
1300         int type = intel_encoder->type;
1301         struct drm_device *dev = encoder->dev;
1302         struct drm_i915_private *dev_priv = dev->dev_private;
1303         uint32_t tmp;
1304
1305         if (intel_crtc->eld_vld && type != INTEL_OUTPUT_EDP) {
1306                 tmp = I915_READ(HSW_AUD_PIN_ELD_CP_VLD);
1307                 tmp &= ~((AUDIO_OUTPUT_ENABLE_A | AUDIO_ELD_VALID_A) <<
1308                          (pipe * 4));
1309                 I915_WRITE(HSW_AUD_PIN_ELD_CP_VLD, tmp);
1310         }
1311
1312         if (type == INTEL_OUTPUT_EDP) {
1313                 struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
1314
1315                 intel_edp_psr_disable(intel_dp);
1316                 ironlake_edp_backlight_off(intel_dp);
1317         }
1318 }
1319
1320 int intel_ddi_get_cdclk_freq(struct drm_i915_private *dev_priv)
1321 {
1322         struct drm_device *dev = dev_priv->dev;
1323         uint32_t lcpll = I915_READ(LCPLL_CTL);
1324         uint32_t freq = lcpll & LCPLL_CLK_FREQ_MASK;
1325
1326         if (lcpll & LCPLL_CD_SOURCE_FCLK) {
1327                 return 800000;
1328         } else if (I915_READ(HSW_FUSE_STRAP) & HSW_CDCLK_LIMIT) {
1329                 return 450000;
1330         } else if (freq == LCPLL_CLK_FREQ_450) {
1331                 return 450000;
1332         } else if (IS_HASWELL(dev)) {
1333                 if (IS_ULT(dev))
1334                         return 337500;
1335                 else
1336                         return 540000;
1337         } else {
1338                 if (freq == LCPLL_CLK_FREQ_54O_BDW)
1339                         return 540000;
1340                 else if (freq == LCPLL_CLK_FREQ_337_5_BDW)
1341                         return 337500;
1342                 else
1343                         return 675000;
1344         }
1345 }
1346
1347 void intel_ddi_pll_init(struct drm_device *dev)
1348 {
1349         struct drm_i915_private *dev_priv = dev->dev_private;
1350         uint32_t val = I915_READ(LCPLL_CTL);
1351
1352         /* The LCPLL register should be turned on by the BIOS. For now let's
1353          * just check its state and print errors in case something is wrong.
1354          * Don't even try to turn it on.
1355          */
1356
1357         DRM_DEBUG_KMS("CDCLK running at %dKHz\n",
1358                       intel_ddi_get_cdclk_freq(dev_priv));
1359
1360         if (val & LCPLL_CD_SOURCE_FCLK)
1361                 DRM_ERROR("CDCLK source is not LCPLL\n");
1362
1363         if (val & LCPLL_PLL_DISABLE)
1364                 DRM_ERROR("LCPLL is disabled\n");
1365 }
1366
1367 void intel_ddi_prepare_link_retrain(struct drm_encoder *encoder)
1368 {
1369         struct intel_digital_port *intel_dig_port = enc_to_dig_port(encoder);
1370         struct intel_dp *intel_dp = &intel_dig_port->dp;
1371         struct drm_i915_private *dev_priv = encoder->dev->dev_private;
1372         enum port port = intel_dig_port->port;
1373         uint32_t val;
1374         bool wait = false;
1375
1376         if (I915_READ(DP_TP_CTL(port)) & DP_TP_CTL_ENABLE) {
1377                 val = I915_READ(DDI_BUF_CTL(port));
1378                 if (val & DDI_BUF_CTL_ENABLE) {
1379                         val &= ~DDI_BUF_CTL_ENABLE;
1380                         I915_WRITE(DDI_BUF_CTL(port), val);
1381                         wait = true;
1382                 }
1383
1384                 val = I915_READ(DP_TP_CTL(port));
1385                 val &= ~(DP_TP_CTL_ENABLE | DP_TP_CTL_LINK_TRAIN_MASK);
1386                 val |= DP_TP_CTL_LINK_TRAIN_PAT1;
1387                 I915_WRITE(DP_TP_CTL(port), val);
1388                 POSTING_READ(DP_TP_CTL(port));
1389
1390                 if (wait)
1391                         intel_wait_ddi_buf_idle(dev_priv, port);
1392         }
1393
1394         val = DP_TP_CTL_ENABLE | DP_TP_CTL_MODE_SST |
1395               DP_TP_CTL_LINK_TRAIN_PAT1 | DP_TP_CTL_SCRAMBLE_DISABLE;
1396         if (drm_dp_enhanced_frame_cap(intel_dp->dpcd))
1397                 val |= DP_TP_CTL_ENHANCED_FRAME_ENABLE;
1398         I915_WRITE(DP_TP_CTL(port), val);
1399         POSTING_READ(DP_TP_CTL(port));
1400
1401         intel_dp->DP |= DDI_BUF_CTL_ENABLE;
1402         I915_WRITE(DDI_BUF_CTL(port), intel_dp->DP);
1403         POSTING_READ(DDI_BUF_CTL(port));
1404
1405         udelay(600);
1406 }
1407
1408 void intel_ddi_fdi_disable(struct drm_crtc *crtc)
1409 {
1410         struct drm_i915_private *dev_priv = crtc->dev->dev_private;
1411         struct intel_encoder *intel_encoder = intel_ddi_get_crtc_encoder(crtc);
1412         uint32_t val;
1413
1414         intel_ddi_post_disable(intel_encoder);
1415
1416         val = I915_READ(_FDI_RXA_CTL);
1417         val &= ~FDI_RX_ENABLE;
1418         I915_WRITE(_FDI_RXA_CTL, val);
1419
1420         val = I915_READ(_FDI_RXA_MISC);
1421         val &= ~(FDI_RX_PWRDN_LANE1_MASK | FDI_RX_PWRDN_LANE0_MASK);
1422         val |= FDI_RX_PWRDN_LANE1_VAL(2) | FDI_RX_PWRDN_LANE0_VAL(2);
1423         I915_WRITE(_FDI_RXA_MISC, val);
1424
1425         val = I915_READ(_FDI_RXA_CTL);
1426         val &= ~FDI_PCDCLK;
1427         I915_WRITE(_FDI_RXA_CTL, val);
1428
1429         val = I915_READ(_FDI_RXA_CTL);
1430         val &= ~FDI_RX_PLL_ENABLE;
1431         I915_WRITE(_FDI_RXA_CTL, val);
1432 }
1433
1434 static void intel_ddi_hot_plug(struct intel_encoder *intel_encoder)
1435 {
1436         struct intel_dp *intel_dp = enc_to_intel_dp(&intel_encoder->base);
1437         int type = intel_encoder->type;
1438
1439         if (type == INTEL_OUTPUT_DISPLAYPORT || type == INTEL_OUTPUT_EDP)
1440                 intel_dp_check_link_status(intel_dp);
1441 }
1442
1443 void intel_ddi_get_config(struct intel_encoder *encoder,
1444                           struct intel_crtc_config *pipe_config)
1445 {
1446         struct drm_i915_private *dev_priv = encoder->base.dev->dev_private;
1447         struct intel_crtc *intel_crtc = to_intel_crtc(encoder->base.crtc);
1448         enum transcoder cpu_transcoder = intel_crtc->config.cpu_transcoder;
1449         u32 temp, flags = 0;
1450
1451         temp = I915_READ(TRANS_DDI_FUNC_CTL(cpu_transcoder));
1452         if (temp & TRANS_DDI_PHSYNC)
1453                 flags |= DRM_MODE_FLAG_PHSYNC;
1454         else
1455                 flags |= DRM_MODE_FLAG_NHSYNC;
1456         if (temp & TRANS_DDI_PVSYNC)
1457                 flags |= DRM_MODE_FLAG_PVSYNC;
1458         else
1459                 flags |= DRM_MODE_FLAG_NVSYNC;
1460
1461         pipe_config->adjusted_mode.flags |= flags;
1462
1463         switch (temp & TRANS_DDI_BPC_MASK) {
1464         case TRANS_DDI_BPC_6:
1465                 pipe_config->pipe_bpp = 18;
1466                 break;
1467         case TRANS_DDI_BPC_8:
1468                 pipe_config->pipe_bpp = 24;
1469                 break;
1470         case TRANS_DDI_BPC_10:
1471                 pipe_config->pipe_bpp = 30;
1472                 break;
1473         case TRANS_DDI_BPC_12:
1474                 pipe_config->pipe_bpp = 36;
1475                 break;
1476         default:
1477                 break;
1478         }
1479
1480         switch (temp & TRANS_DDI_MODE_SELECT_MASK) {
1481         case TRANS_DDI_MODE_SELECT_HDMI:
1482         case TRANS_DDI_MODE_SELECT_DVI:
1483         case TRANS_DDI_MODE_SELECT_FDI:
1484                 break;
1485         case TRANS_DDI_MODE_SELECT_DP_SST:
1486         case TRANS_DDI_MODE_SELECT_DP_MST:
1487                 pipe_config->has_dp_encoder = true;
1488                 intel_dp_get_m_n(intel_crtc, pipe_config);
1489                 break;
1490         default:
1491                 break;
1492         }
1493
1494         if (encoder->type == INTEL_OUTPUT_EDP && dev_priv->vbt.edp_bpp &&
1495             pipe_config->pipe_bpp > dev_priv->vbt.edp_bpp) {
1496                 /*
1497                  * This is a big fat ugly hack.
1498                  *
1499                  * Some machines in UEFI boot mode provide us a VBT that has 18
1500                  * bpp and 1.62 GHz link bandwidth for eDP, which for reasons
1501                  * unknown we fail to light up. Yet the same BIOS boots up with
1502                  * 24 bpp and 2.7 GHz link. Use the same bpp as the BIOS uses as
1503                  * max, not what it tells us to use.
1504                  *
1505                  * Note: This will still be broken if the eDP panel is not lit
1506                  * up by the BIOS, and thus we can't get the mode at module
1507                  * load.
1508                  */
1509                 DRM_DEBUG_KMS("pipe has %d bpp for eDP panel, overriding BIOS-provided max %d bpp\n",
1510                               pipe_config->pipe_bpp, dev_priv->vbt.edp_bpp);
1511                 dev_priv->vbt.edp_bpp = pipe_config->pipe_bpp;
1512         }
1513 }
1514
1515 static void intel_ddi_destroy(struct drm_encoder *encoder)
1516 {
1517         /* HDMI has nothing special to destroy, so we can go with this. */
1518         intel_dp_encoder_destroy(encoder);
1519 }
1520
1521 static bool intel_ddi_compute_config(struct intel_encoder *encoder,
1522                                      struct intel_crtc_config *pipe_config)
1523 {
1524         int type = encoder->type;
1525         int port = intel_ddi_get_encoder_port(encoder);
1526
1527         WARN(type == INTEL_OUTPUT_UNKNOWN, "compute_config() on unknown output!\n");
1528
1529         if (port == PORT_A)
1530                 pipe_config->cpu_transcoder = TRANSCODER_EDP;
1531
1532         if (type == INTEL_OUTPUT_HDMI)
1533                 return intel_hdmi_compute_config(encoder, pipe_config);
1534         else
1535                 return intel_dp_compute_config(encoder, pipe_config);
1536 }
1537
1538 static const struct drm_encoder_funcs intel_ddi_funcs = {
1539         .destroy = intel_ddi_destroy,
1540 };
1541
1542 static struct intel_connector *
1543 intel_ddi_init_dp_connector(struct intel_digital_port *intel_dig_port)
1544 {
1545         struct intel_connector *connector;
1546         enum port port = intel_dig_port->port;
1547
1548         connector = kzalloc(sizeof(*connector), GFP_KERNEL);
1549         if (!connector)
1550                 return NULL;
1551
1552         intel_dig_port->dp.output_reg = DDI_BUF_CTL(port);
1553         if (!intel_dp_init_connector(intel_dig_port, connector)) {
1554                 kfree(connector);
1555                 return NULL;
1556         }
1557
1558         return connector;
1559 }
1560
1561 static struct intel_connector *
1562 intel_ddi_init_hdmi_connector(struct intel_digital_port *intel_dig_port)
1563 {
1564         struct intel_connector *connector;
1565         enum port port = intel_dig_port->port;
1566
1567         connector = kzalloc(sizeof(*connector), GFP_KERNEL);
1568         if (!connector)
1569                 return NULL;
1570
1571         intel_dig_port->hdmi.hdmi_reg = DDI_BUF_CTL(port);
1572         intel_hdmi_init_connector(intel_dig_port, connector);
1573
1574         return connector;
1575 }
1576
1577 void intel_ddi_init(struct drm_device *dev, enum port port)
1578 {
1579         struct drm_i915_private *dev_priv = dev->dev_private;
1580         struct intel_digital_port *intel_dig_port;
1581         struct intel_encoder *intel_encoder;
1582         struct drm_encoder *encoder;
1583         struct intel_connector *hdmi_connector = NULL;
1584         struct intel_connector *dp_connector = NULL;
1585         bool init_hdmi, init_dp;
1586
1587         init_hdmi = (dev_priv->vbt.ddi_port_info[port].supports_dvi ||
1588                      dev_priv->vbt.ddi_port_info[port].supports_hdmi);
1589         init_dp = dev_priv->vbt.ddi_port_info[port].supports_dp;
1590         if (!init_dp && !init_hdmi) {
1591                 DRM_DEBUG_KMS("VBT says port %c is not DVI/HDMI/DP compatible\n",
1592                               port_name(port));
1593                 init_hdmi = true;
1594                 init_dp = true;
1595         }
1596
1597         intel_dig_port = kzalloc(sizeof(*intel_dig_port), GFP_KERNEL);
1598         if (!intel_dig_port)
1599                 return;
1600
1601         intel_encoder = &intel_dig_port->base;
1602         encoder = &intel_encoder->base;
1603
1604         drm_encoder_init(dev, encoder, &intel_ddi_funcs,
1605                          DRM_MODE_ENCODER_TMDS);
1606
1607         intel_encoder->compute_config = intel_ddi_compute_config;
1608         intel_encoder->mode_set = intel_ddi_mode_set;
1609         intel_encoder->enable = intel_enable_ddi;
1610         intel_encoder->pre_enable = intel_ddi_pre_enable;
1611         intel_encoder->disable = intel_disable_ddi;
1612         intel_encoder->post_disable = intel_ddi_post_disable;
1613         intel_encoder->get_hw_state = intel_ddi_get_hw_state;
1614         intel_encoder->get_config = intel_ddi_get_config;
1615
1616         intel_dig_port->port = port;
1617         intel_dig_port->saved_port_bits = I915_READ(DDI_BUF_CTL(port)) &
1618                                           (DDI_BUF_PORT_REVERSAL |
1619                                            DDI_A_4_LANES);
1620
1621         intel_encoder->type = INTEL_OUTPUT_UNKNOWN;
1622         intel_encoder->crtc_mask =  (1 << 0) | (1 << 1) | (1 << 2);
1623         intel_encoder->cloneable = false;
1624         intel_encoder->hot_plug = intel_ddi_hot_plug;
1625
1626         if (init_dp)
1627                 dp_connector = intel_ddi_init_dp_connector(intel_dig_port);
1628
1629         /* In theory we don't need the encoder->type check, but leave it just in
1630          * case we have some really bad VBTs... */
1631         if (intel_encoder->type != INTEL_OUTPUT_EDP && init_hdmi)
1632                 hdmi_connector = intel_ddi_init_hdmi_connector(intel_dig_port);
1633
1634         if (!dp_connector && !hdmi_connector) {
1635                 drm_encoder_cleanup(encoder);
1636                 kfree(intel_dig_port);
1637         }
1638 }